Direc­tory tex-archive/macros/generic/lambda-lists

This is the lambda-lists package by Alan Jeffrey, for doing lists and
lambda calculus via expandable macros (a.k.a. in TeX's mouth).
For historical reasons, the code is available in a file named
lambda.sty; it runs under both plain TeX and LaTeX. It is unrelated to
the lambda format that is part of Omega.
The documentation is in lambda-lists.{tex,pdf}. It was originally
published as an article in TUGboat, vol.11, no.2, pp.237-245.
http://tug.org/TUGboat.
The entire package is released under the LPPL. It consists of this
README, lambda.sty, lambda-lists.tex, and the derived file
lambda-lists.pdf.
Web page with contact info: http://ect.bell-labs.com/who/ajeffrey.

lambda-lists – Lists in TeX's mouth

Th­ese list-pro­cess­ing macros avoid the re­as­sign­ments em­ployed in
the macros shown in Ap­pendix D of the TeXbook: all the
ma­nip­u­la­tions take place in what Knuth is pleased to call
“TeX’s mouth”.